BIBLIOGRAPHIC LIST OF GENERA AND SPECIES. 363 



Cyrtodonta? lamellosa Hudson. 



Cyrtodonta? lamellosa Hudson-, Bull. New York State Mus., 80, 1905, p. 287, pi. 4, 



figs. 10-13. 

 Chazyan (Valcour): Valcour Island, Lake Champlain. 



Cyrtodonta leucothea Billings. 



Cyrtodonta Leucothea Billings, Pal. Foss., 1, Geol. Surv. Canada, 1805, p. 46, fig. 

 49 (adv. sheets, 1862); Geol. Canada, Geol. Surv. Canada, 18G3, p. 143, fig. 82. 

 Cypricardites leucothea Miller, N. A. Geol. Pal., 1889, p. 477 (gen. ref.). 

 Black River (Leray): Pauquette Rapids, Ottawa River, Canada. 



Cyrtodonta normanensis Safford. 



Cyrtodonta Normanensis Safford, Geol. Tennessee, 1869, p. 287 (nom. nud.). 

 Mohawkian: Tennessee. 



Cyrtodonta obesa Ulrich. 



Cyrtodonta obesa Ulrich, Geol. Minnesota, 3, pt. 2, 1894, p. 542, pi. 39, figs. 10, 11, 



12. 

 Black River: Mercer County, Kentucky; St. Paul and Preston, Minnesota 



(Decorah). 

 Cotypes.C&t. Nos. 46184, 46185, U.S.N.M. 



Cyrtodonta obliqua (Meek and Worthen). 



Cypricardites obliquus Meek and Worthen, Geol. Surv. Illinois, 3, 1868, p. 311, 



pi. 2, fig. 9a, b. 

 Cyrtodonta obliquus Ulrich, Geol. Minnesota, 3, pt. 2, 1897, p. 540, p. 39, figs. 



35, 36. 

 Trenton: Scales Mound, Illinois (Galena); Fillmore County, Minnesota (Prosser). 



Cyrtodonta obtusa (Hall). 



Ambonychia obtusa Hall, Pal. New York, 1, 1847, p. 167, pi. 36, figs. 8a-b. 

 Cyrtodonta obtusa Billings, Geol. Surv. Canada, Rep. Progr. for 1857, 1858, p. 184, 



figs. 13, 14; Canadian Nat. Geol., 3, 1858, p. 436, figs. 13, 14; Geol. Canada, 



Geol. Surv. Canada, 1863, p. 147, fig. lOla, b. 



Posidonomya obtusa Emmons, Amer. Geology, 1, pt. 2, 1855, p. 177. 

 Palsearca obtusa Hall, 12tii Rep. New York State Cab. Nat. Hist., 1859, p. 65 



(gen. ref.). 



Cypricardites obtusus Miller, N. A. Geol. Pal., 1889, p. 477 (gen. ref.). 

 Trenton: Watertown, New York; Canada. 



Cyrtodonta oviformis (Ulrich). 



Cypricardites oviformis Ulrich, Amer. Geol., 10, 1892, p. 99, pi. 7, figs. 3, 4. 

 Cyrtodonta oviformis Ulrich, Geol. Minnesota, 3, pt. 2, 1894, p. 544, pi. 39, fig. 46; 



pi. 40, fig. 1. 



Black River (Platteville): Janesville, Wisconsin. 

 HolotypeC&t. No. 46186, U.S.N.M. 



Cyrtodonta parva Ulrich. 



Cyrtodonta parva Ulrich, Geol. Minnesota, 3, pt. 2, 1894, p. 541, pi. 39, figs. 24, 25. 

 Trenton (Prosser): Near Fountain, Minnesota. 

 Holotype.C&t. No. 46187, U.S.N.M. 



Cyrtodonta persimilis Ulrich. 



Cyrtodonta persimilis Ulrich, Geol. Minnesota, 3, pt. 2, 1894, p. 544, pi. 39, figs. 



41, 44. 



Cypricardites persimilis Miller, N. A. Geol. Pal., 1897, p. 781 (gen. ref.). 

 Black River (Platteville): Minneapolis, Minnesota; Beloit, Wisconsin. 

 Cotypes.Va,t. Nos. 46188, 46189, U.S.N.M. 



